| Full Name | Yoon Jae-Hyuk |
| Stage Name | Jaehyuk |
| Native Name | 윤재혁 |
| Birthday | July 23, 2001 |
| Age | 23 years and 8 months old |
| Zodiac Sign | Leo |
| Birthplace | Yongin, Gyeonggi Province, South Korea |
| Height | 5’10” (178 cm) |
| Weight | 138.9 lbs (63 kg) |
| Blood Type | A |
| MBTI | INFP |
| Education | Baekseok Art University |
| Languages | Korean |
| Group | TREASURE |
| Social Media | weverse |